کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
811219 1469145 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Poroviscoelastic characterization of particle-reinforced gelatin gels using indentation and homogenization
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
Poroviscoelastic characterization of particle-reinforced gelatin gels using indentation and homogenization
چکیده انگلیسی

Hydrogels are promising materials for bioengineering applications, and are good model materials for the study of hydrated biological tissues. As these materials often have a structural function, the measurement of their mechanical properties is of fundamental importance. In the present study gelatin gels reinforced with ceramic microspheres are produced and their poroviscoelastic response in spherical indentation is studied. The constitutive responses of unreinforced gels are determined using inverse finite element modeling in combination with analytical estimates of material parameters. The behavior of composite gels is assessed by both analytical and numerical homogenization. The results of the identification of the constitutive parameters of unreinforced gels show that it is possible to obtain representative poroviscoelastic parameters by spherical indentation without the need for additional mechanical tests. The agreement between experimental results on composite gelatin and the predictions from homogenization modeling show that the adopted modeling tools are capable of providing estimates of the poroviscoelastic response of particle-reinforced hydrogels.

Figure optionsDownload high-quality image (108 K)Download as PowerPoint slideResearch highlights
► Gelatin gels are poroviscoelastic.
► Indentation is an effective experimental technique to characterize poroviscoelastic materials.
► Particle-reinforced hydrogels can be studied using classic homogenization tools.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 4, Issue 4, May 2011, Pages 610–617
نویسندگان
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